ARM: tegra: call cpu_do_idle from C code
When building a kernel for multiple CPU architecture levels,
cpu_do_idle() is a macro for an indirect function call, which
cannot be called from assembly code as Tegra does.
Adding a trivial C wrapper for this function lets us build
a tegra kernel with ARMv6 support enabled.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Joseph Lo <josephl@nvidia.com>
Cc: Stephen Warren <swarren@nvidia.com>
diff --git a/arch/arm/mach-tegra/pm.c b/arch/arm/mach-tegra/pm.c
index 0494f73..04a8e06 100644
--- a/arch/arm/mach-tegra/pm.c
+++ b/arch/arm/mach-tegra/pm.c
@@ -162,6 +162,11 @@
return last_cpu;
}
+int tegra_cpu_do_idle(void)
+{
+ return cpu_do_idle();
+}
+
static int tegra_sleep_cpu(unsigned long v2p)
{
/* Switch to the identity mapping. */
diff --git a/arch/arm/mach-tegra/sleep-tegra20.S b/arch/arm/mach-tegra/sleep-tegra20.S
index 9f6bfaf..e3f2417 100644
--- a/arch/arm/mach-tegra/sleep-tegra20.S
+++ b/arch/arm/mach-tegra/sleep-tegra20.S
@@ -197,7 +197,7 @@
mov r3, #CPU_RESETTABLE
str r3, [r0]
- bl cpu_do_idle
+ bl tegra_cpu_do_idle
/*
* cpu may be reset while in wfi, which will return through
